Wear Resistance Study of Bionic Pitted Ni Cladding Layer on 7075 Aluminum Alloy Drill Pipe Surface
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Coatings, Volume 13, issue 10
Abstract
To enhance the lifespan of drill pipes and minimize wear, this study introduces a bionic structure model inspired by the pit shape structure found in the dung beetle’s abdomen. The stress distribution and wear of bionic pitted structure and ordinary structure are simulated by finite element software. The findings revealed that the bionic structure significantly improves stress distribution, resulting in an impressive 81.3% increase in lifespan. Subsequently, the surface of the 7075 aluminum drill pipe was coated with Ni powder by a laser cladding system. Wear tests were conducted to analyze the wear and surface damage behavior of the cladding layer. The microstructure, composition, and microhardness of the cladding layer were measured and observed. The results showed that the cladding layer was mainly composed of Al3Ni2 and had high hardness. Additionally, a transition region exists between the cladding layer and the substrate, comprising relatively low hardness Al, thereby enhancing the drill pipe’s ability to withstand alternating loads. Furthermore, the bionic structure possesses the capability to store particles, effectively reducing the occurrence of abrasive wear and increasing the lifespan by 70.0%.Description
Funding Information: This research has been funded by the National Key R & D Program of China (Grant No. 2022YFC3005903-2), the Engineering Research Center of Geothermal Resources Development Technology and Equipment (Grant Nos. 23021 and 23022), the Graduate Innovation Fund of Jilin University (Grant No. 2023CX106), and the Ministry of Education, Jilin University, National Natural Science Foundation of China (Grant No. 41972324 and No. 42172345). Publisher Copyright: © 2023 by the authors.
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Li, X, Gao, K, Zhao, Y, Xie, X, Lü, X, Zhang, C & Ai, H 2023, 'Wear Resistance Study of Bionic Pitted Ni Cladding Layer on 7075 Aluminum Alloy Drill Pipe Surface', Coatings, vol. 13, no. 10, 1768. https://doi.org/10.3390/coatings13101768